How to do PPC + Affiliate Marketing?

Hello everyone,
Well, I am very new in PPC marketing, to be honest, and I am just on the learning phase right now.
But the challenge that I am receiving is that if I am promoting a blog article that has affiliate links via PPC then they are getting disapproved.

However, when I am searching on Google for those keywords, I see there are blog articles with affiliate links.
How come they are approved then?

If anyone has any experience on this, please share.

Thanks!